com port

Discussion in 'The Projects Forum' started by flem su, Apr 10, 2011.

  1. flem su

    Thread Starter New Member

    Apr 1, 2011
    How(where) do i connect a relay to 9pin port if i want to import a single signal to pc for use in python(basic counter program). I'm working on a heart rate counter
  2. lightingman

    Senior Member

    Apr 19, 2007
    If you are talking about the 9 pin serial comms port, then no, unless the program you are using can sense one of the control lines on the port . You can however read and send data into and out of a parallel printer port.